diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..1a6bd45
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
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diff --git a/package-lock.json b/package-lock.json
index 9e57cb9..40ce4c4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -417,11 +417,23 @@
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@@ -14691,12 +15592,6 @@
       "resolved": "https://registry.npmjs.org/whatwg-fetch/-/whatwg-fetch-3.0.0.tgz",
       "integrity": "sha512-9GSJUgz1D4MfyKU7KRqwOjXCXTqWdFNvEr7eUBYchQiVc744mqK/MzXPNR2WsPkmkOa4ywfg8C2n8h+13Bey1Q=="
     },
-    "whet.extend": {
-      "version": "0.9.9",
-      "resolved": "https://registry.npmjs.org/whet.extend/-/whet.extend-0.9.9.tgz",
-      "integrity": "sha1-+HfVv2SMl+WqVC+twW1qJZucEaE=",
-      "dev": true
-    },
     "which": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
diff --git a/package.json b/package.json
index 125be70..f681a6f 100644
--- a/package.json
+++ b/package.json
@@ -24,16 +24,16 @@
     "babel-core": "^6.26.3",
     "babel-loader": "^7.1.5",
     "babel-preset-env": "^1.7.0",
-    "css-loader": "^0.28.11",
+    "css-loader": "^4.2.2",
     "file-loader": "^1.1.11",
     "html-loader": "^0.5.5",
     "html-webpack-plugin": "^3.1.0",
     "karma-phantomjs2-launcher": "^0.5.0",
     "node-sass": "^4.9.3",
-    "optimize-css-assets-webpack-plugin": "^4.0.3",
+    "optimize-css-assets-webpack-plugin": "^5.0.4",
     "pixi.js": "^5.0.3",
     "postcss-flexbugs-fixes": "^3.3.1",
-    "postcss-loader": "^2.1.6",
+    "postcss-loader": "^3.0.0",
     "sass-loader": "^7.1.0",
     "style-loader": "^0.20.3",
     "uglifyjs-webpack-plugin": "^1.3.0",
diff --git a/src/index.html b/src/index.html
index 11d3d32..0b62907 100644
--- a/src/index.html
+++ b/src/index.html
@@ -44,8 +44,8 @@
         1845758433.2324426
       ],
       "initialYDomain": [
-        1657057063.253278,
-        1796148180.8504643
+        1726602622.0518713,
+        1726602622.0518713
       ],
       "tracks": {
         "top": [
@@ -85,82 +85,10 @@
             },
             "width": 568,
             "height": 86
-          },
-          {
-            "type": "horizontal-chromosome-labels",
-            "uid": "U-HqyEhHRXyanvtLTKG_6g",
-            "tilesetUid": "ADfY_RtsQR6oKOMyrq6qhw",
-            "server": "http://resgen.io/api/v1",
-            "options": {
-              "showMousePosition": false,
-              "mousePositionColor": "#999999",
-              "color": "#808080",
-              "stroke": "#ffffff",
-              "fontSize": 12,
-              "fontIsLeftAligned": false
-            },
-            "width": 568,
-            "height": 30
           }
         ],
         "left": [],
-        "center": [
-          {
-            "uid": "B8_a4gh4TF-n00huvQE_Zg",
-            "type": "combined",
-            "contents": [
-              {
-                "server": "http://higlass.io/api/v1",
-                "tilesetUid": "OouYZgjTTe-ohUwI1ZCaiA",
-                "uid": "EYCEqJPBQLqItvC9wG19ow",
-                "type": "heatmap",
-                "options": {
-                  "backgroundColor": "#eeeeee",
-                  "labelPosition": "bottomRight",
-                  "labelLeftMargin": 0,
-                  "labelRightMargin": 0,
-                  "labelTopMargin": 0,
-                  "labelBottomMargin": 0,
-                  "labelShowResolution": true,
-                  "labelShowAssembly": true,
-                  "colorRange": [
-                    "white",
-                    "rgba(245,166,35,1.0)",
-                    "rgba(208,2,27,1.0)",
-                    "black"
-                  ],
-                  "colorbarBackgroundColor": "#ffffff",
-                  "maxZoom": null,
-                  "minWidth": 100,
-                  "minHeight": 100,
-                  "colorbarPosition": "topRight",
-                  "trackBorderWidth": 0,
-                  "trackBorderColor": "black",
-                  "heatmapValueScaling": "log",
-                  "showMousePosition": false,
-                  "mousePositionColor": "#000000",
-                  "showTooltip": false,
-                  "extent": "full",
-                  "zeroValueColor": null,
-                  "name": "Krietenstein et al. 2019 - H1-hESC",
-                  "scaleStartPercent": "0.00000",
-                  "scaleEndPercent": "1.00000"
-                },
-                "width": 568,
-                "height": 238,
-                "transforms": [
-                  {
-                    "name": "ICE",
-                    "value": "weight"
-                  }
-                ]
-              }
-            ],
-            "width": 568,
-            "height": 238,
-            "options": {}
-          }
-        ],
+        "center": [],
         "bottom": [],
         "right": [],
         "whole": [],
@@ -168,7 +96,7 @@
       },
       "layout": {
         "w": 12,
-        "h": 9,
+        "h": 4,
         "x": 0,
         "y": 0,
         "moved": false,
diff --git a/src/scripts/StackedBarTrack.js b/src/scripts/StackedBarTrack.js
index 5bed047..c43a029 100644
--- a/src/scripts/StackedBarTrack.js
+++ b/src/scripts/StackedBarTrack.js
@@ -31,7 +31,9 @@ const StackedBarTrack = (HGC, ...args) => {
         min: null
       };
 
+      this.textureGraphics = new HGC.libraries.PIXI.Graphics();
       this.stackedBarTrackInitialized = true
+
     }
 
     createColorScale() {
@@ -84,6 +86,13 @@ const StackedBarTrack = (HGC, ...args) => {
       this.rescaleTiles();
     }
 
+    destroyTile(tile) {
+      tile.sprite.destroy(true);
+      tile.graphics.destroy(true);
+
+      tile.graphics = null;
+      tile.sprite = null;
+    }
 
     rerender(newOptions) {
       super.rerender(newOptions);
@@ -359,7 +368,7 @@ const StackedBarTrack = (HGC, ...args) => {
      * @param tile
      */
     drawVerticalBars(matrix, tileX, tileWidth, positiveMax, negativeMax, tile) {
-      let graphics = new HGC.libraries.PIXI.Graphics();
+      this.textureGraphics.clear();
       const trackHeight = this.dimensions[1];
 
       // get amount of trackHeight reserved for positive and for negative
@@ -377,11 +386,11 @@ const StackedBarTrack = (HGC, ...args) => {
       const width = 10;
 
       // calls drawBackground in PixiTrack.js
-      this.drawBackground(matrix, graphics);
+      this.drawBackground(matrix, this.textureGraphics);
 
       // borders around each bar
       if (this.options.barBorder) {
-        graphics.lineStyle(1, 0x000000, 1);
+        this.textureGraphics.lineStyle(1, 0x000000, 1);
       }
 
 
@@ -400,8 +409,8 @@ const StackedBarTrack = (HGC, ...args) => {
           const height = valueToPixelsPositive(positive[i].value);
           const y = positiveTrackHeight - (positiveStackedHeight + height);
           this.addSVGInfo(tile, x, y, width, height, positive[i].color);
-          graphics.beginFill(this.colorHexMap[positive[i].color]);
-          graphics.drawRect(x, y, width, height);
+          this.textureGraphics.beginFill(this.colorHexMap[positive[i].color]);
+          this.textureGraphics.drawRect(x, y, width, height);
 
           positiveStackedHeight = positiveStackedHeight + height;
           if (lowestY > y)
@@ -420,8 +429,8 @@ const StackedBarTrack = (HGC, ...args) => {
             const height = valueToPixelsNegative(negative[i].value);
             const y = positiveTrackHeight + negativeStackedHeight;
             this.addSVGInfo(tile, x, y, width, height, negative[i].color);
-            graphics.beginFill(this.colorHexMap[negative[i].color]);
-            graphics.drawRect(x, y, width, height);
+            this.textureGraphics.beginFill(this.colorHexMap[negative[i].color]);
+            this.textureGraphics.drawRect(x, y, width, height);
             negativeStackedHeight = negativeStackedHeight + height;
           }
         }
@@ -430,7 +439,7 @@ const StackedBarTrack = (HGC, ...args) => {
       // vertical bars are drawn onto the graphics object
       // and a texture is generated from that
       const texture = pixiRenderer.generateTexture(
-        graphics, HGC.libraries.PIXI.SCALE_MODES.NEAREST
+        this.textureGraphics, HGC.libraries.PIXI.SCALE_MODES.NEAREST
       );
       const sprite = new HGC.libraries.PIXI.Sprite(texture);
       sprite.width = this._xScale(tileX + tileWidth) - this._xScale(tileX);